Sprag-shaving machine.



R. APPLBMAN.

SPRAG SHAVING MACHINE. I APPLICATION FILED NOV. 18. 1907.

944,647, f Patented Dec.28, 1909.,

BMW

REUBEN AIPPLEMAN, or LUZERNE, IPENNSYLVANIA.

SPRAG-SHAVING MACHINE.

Application filed November 18, 1907. Serial m 402,125,"

To all whom it may concern;

Be it known that I, REUBEN .APPLEMAN, a, citizen of the United States, residing at Luzerne, in Luzern'e county andState of Penn sylvania,fhaye invented a-"new and useful f sprag sliaving Machine.

of which the fol lowing. is aspecificatio'n;

My invention relates to improvements in manufacturing mine and'otheif sprags,'ge i 1 erally used in stopping mine cars in and about themines, by shaving process, which cuts. and sharpens the sprags by means of knives placed ligijzontallybr obliquelyor by using knives bentat angle, or curved knives. :And the object of my invention is tonnprove the method of manufacturing sprags by a in'iachine which willproduce asgood sprags as those made by hand shaving' or by hand dress ng by ax. I attain this object by. mechanism illustrated inthe accompanying drawings in which,

.Figure 1 is avertical machine, as it aJpears from'aside View.

Fig. 2 isthe mac iine as it appears frojma top view;-andFig. .3 is the machine as it appears from a front endview. The device 'cons ists of a bed a, supported on legs 7). The drive shaft (1 is carried by journal f, on theside of the bed a, and journal i" which is carried by'the bracket] The drive shaft d between thejjournals f' and -jcarrics the drive pulley e, and the- On the inner end of the drive shaft (Z; attached'thecrank disk-cf which carries pit-man g.- Sliding between. the guides j and jywhich are rigidl attached tothe' bed a is'a carriage h which-is attached to the pitman g by means of a wristpin' connection and. is adapted .t'o-ca'rr'y the knifeblatlei.

The work feeding mechanism consists of a fi'iot'treadle .5, pivoted at s to the front. pairiof legs, and attached by means of the .links 1* to'tlie vertically reciprocating .ro'd, m,"\vhich is carried by the. bracket n at 'tach'cl to the bed plate. The bracket 01.

which-is attached to the, bracket and to thebed a is adapted to form an abutment. against which the work. is held during the cutting action of the horizontal reciprocatin blade-z". :An adjustablelcollar 0 on the rot m permits'of' regulation of the tension' section ofthe entirey t1en, at the sametime theworkfres't 7.; is.

the pedal sand its connected I' claim as'my inventi 'in;

. of the spring p, whose function-is to' form a resilient resistance against the operators foot pressure on the treadle s and to return the feeding lnechanism to inoperative position. On the upper end or head, of the rod mis carried a feeding table or rest L. On. each side-of this table 70 are carried adjusting 'scr'ewsLand L, which by contacting with. the underside of the bed a limits the Specification of Letters Patent. Patented De( 5, 28, 1909. V

upwardmovement of the rest In, so that the amount of cutting" will be uniform on the rations p eces'ot' work.

The pperationof the device is as follows:

The power wheel- 6 being driven by any suitable. power, theknifecarriage IL, is ac cordingly reciprocated between the guldesby means o-f-the' operative connections to the drive shaft; One end of the workivhich is to be formed into a. 'sprag, is rested onthe feed rest 7., with. its end abuttin'ga ainst'the bracket-MC. The work is held in t e operatorfs hand in a downwardly inclined three raised slowly upward by the-actuation of parts, until the regulatingscrews L and L have contacted with the'bcd plate. The knifei being liorizontalli v re'ciprocated' over "the work, shavesil oil. at an a i gle determined by the inclination ;by which theoperator holds the i work; i

will be readily seen that by meansot' this device, either wedged shape or conical sp 'ags may be formed according to the manipulation of the work plecc'by tne operator.

1. I n'a sprag shaving machine, a horizon tally rec1 rocat1ng lade, operating means forsaid blade, a. vertically sliding work rest.-

a treadle, and operative. connections between the said ivorlcrest and said treadl'e.

tally reciprocating blade. operating means In a sprag shmrmg machine, ahorizou for said blade, a verticalli slidinq work'resh.

mag c. limit the-movement of 'saidmvorkrest, .a treadle, a mi operat ive 'ccmnect ionsbe: tween the Sillfl'WOl'li rest and the said treadlo.

REUBEN APPLEMAN.

\Vi tnesses JonN No uun, GEoJHU'roHnys. 

